Printing apparatus, printing method, and non-transitory recording medium

ABSTRACT

There is provided a printing apparatus, including: an obtaining portion and a printing portion. The obtaining portion obtains information regarding an image in which visibility is made to deteriorate on a sheet on which the image is printed. The printing portion overwrites an image having a printing surface pattern on the sheet by using an ink ribbon based on the obtained information.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of application Ser. No. 14/798,708filed on Jul. 14, 2015, the entire contents of which are incorporatedherein by reference.

FIELD

Embodiments described herein relate generally to a printing apparatus, aprinting method, and a non-transitory recording medium.

BACKGROUND

In the related art, a shredder is used in erasing an image containingconfidential information or personal information (hereinafter, referredto as “confidential information or the like”) which is printed on asheet. However, in the case of the shredder, a load of a user increasesas the amount of sheets which are to be shredded increases.

In addition, when the user stamps an image having a special printingsurface pattern on the confidential information or the like, visibilityof the image containing the confidential information or the like alsoeasily deteriorates.

However, in this case, the load of the user increases as the amount ofthe sheets which are the targets to be erased increases, similarly to inthe case of the shredder. Such a problem is not limited to erasing theimage of the confidential information or the like printed on the sheet,but is common to all of the cases where the user desires to erase theprinted image on the sheet.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view illustrating the external appearance of a configurationof a printing apparatus of an embodiment.

FIG. 2 is a side view illustrating an example of an internalconfiguration of the printing apparatus of the embodiment.

FIG. 3 is a side view illustrating an example of the internalconfiguration of the printing apparatus of the embodiment.

FIG. 4 is a schematic block diagram illustrating a functionalconfiguration of a control device.

FIG. 5 is a view illustrating a specific example of a range settingscreen displayed on a display portion.

FIGS. 6A and 6B are schematic views illustrating a specific example oferasing and printing.

FIG. 7 is a flowchart illustrating a flow of operations performed in theprinting apparatus.

FIG. 8 is a view illustrating a specific example of the range settingscreen when a plurality of performance ranges are set.

FIGS. 9A and 9B are schematic views illustrating a specific example oferasing and printing when the plurality of performance ranges are set.

FIG. 10 is a schematic block diagram illustrating a functionalconfiguration of a control device according to a second embodiment.

FIG. 11 is a view illustrating a specific example of the range settingscreen which includes printing format data.

FIGS. 12A and 12B are schematic views illustrating a specific example oferasing and printing.

FIG. 13 is a flow chart illustrating the flow of the operationsperformed in the printing apparatus.

DETAILED DESCRIPTION

A printing apparatus according to an embodiment includes an obtainingportion and a printing portion. The obtaining portion obtainsinformation regarding an image of which visibility is a target which maydeteriorate on a sheet on which the image is printed. The printingportion overwrites an image having a printing surface pattern on thesheet by using an ink ribbon based on the obtained information.

Hereinafter, the printing apparatus according to the embodiment will bedescribed with reference to the drawings.

FIG. 1 is a view showing the external appearance of a configuration of aprinting apparatus 100 of the embodiment.

The printing apparatus 100 prints a predetermined image on the sheet andissues the sheet (hereinafter, referred to as a “printed sheet”) onwhich the image is printed. As an example of the sheet, a cut sheet isused in the embodiment. In addition, the printing apparatus 100overwrites an image having a special printing surface pattern withrespect to a predetermined region of the printed sheet. Thepredetermined region is indicated as a region of which visibility is adesired target which may deteriorate by a user on the printed sheet. Thespecial printing surface pattern is a printing surface pattern of astructure in which a plurality of symbols are arranged. Here, the symbolis a letter, a number, a character, or a mark. The printing apparatus100 makes the visibility of the image printed within the predeterminedregion deteriorate by printing the image having the special printingsurface pattern with respect to the predetermined region on the printedsheet. In the description below, it is described that processing ofprinting the image having the special printing surface pattern withrespect to the image which is printed in the predetermined region on theprinted sheet, is referred to as erasing and printing.

As illustrated in FIG. 1, the printing apparatus 100 includes a displayportion 200, an operating portion 300, and a discharging port 350.

The display portion 200 is an image display device, such as a liquidcrystal display or an organic electro-luminescence (EL) display. Thedisplay portion 200 operates as an output interface and displays ofcharacters or images. For example, the display portion 200 displays arange setting screen. The range setting screen is, for example, a screenfor setting a performance range of erasing and printing with respect tothe user. In addition, the display portion 200 operates as an inputinterface and receives an input of an instruction from the user. Forexample, the display portion 200 may receive an input of informationwhich is input into the operating portion 300 when the display portion200 operates as the input interface.

The operating portion 300 is configured by using a traditional inputdevice, such as a button, a keyboard, or a pointing device (a mouse or atablet). The operating portion 300 is operated by the user when the userinputs the instruction into the printing apparatus 100. For example, theoperating portion 300 receives a setting instruction indicating theperformance range of erasing and printing (hereinafter, referred to as a“setting instruction”), a setting instruction indicating the size of thesheet, and an instruction to perform erasing and printing.

The discharging port 350 discharges the printed sheet, or the printedsheet on which the image having the special printing surface pattern isprinted.

FIGS. 2 and 3 are side views illustrating an example of an internalconfiguration of the printing apparatus 100 of the embodiment. In FIGS.2 and 3, views when the internal configuration of the printing apparatus100 is viewed from respectively different sides are illustrated. Asillustrated in FIGS. 2 and 3, the printing apparatus 100 includes afirst chamber S1 and a second chamber S2 inside a housing. The firstchamber S1 and the second chamber S2 are divided by a vertical wall al.First, a configuration inside the first chamber S1 will be describedwith reference to FIG. 2.

The printing apparatus 100 includes a paper supplying tray 1, a papersupplying roller 2, a sensor S, a plurality of motors M, a plurality ofplaten rollers PR, a plurality of transporting rollers R, a plurality ofpinching rollers P, a supply shaft 4 of an ink ribbon 3, and a windingshaft 5 and a thermal head 6 of the ink ribbon 3.

The paper supplying tray 1 is a stand for loading a sheet 7. In theembodiment, the printed sheet is loaded as the sheet 7 on the papersupplying tray 1.

The paper supplying roller 2 sends the sheet 7 (printed sheet) loaded onthe paper supplying tray 1 to a transporting path 8 one by one.

The sensor S detects the presence of the sheet. The position of theprinted sheet which is present in the printing apparatus 100 is detectedby the sensor S. The sensor S sends notification of a detection resultto a control device 400.

The motor M drives the transporting roller R. The driven transportingroller R transports the printed sheet.

The platen roller PR is rotated and driven by a rotation drivingmechanism (not illustrated) which includes a motor (not illustrated),such as a stepping motor; a gear; and a belt. The platen roller PR isdisposed to oppose the thermal head 6 which is provided in a printinghead 6-1. The platen roller PR presses the printed sheet so that theprinted sheet is appropriately transported on the transporting path 8.The printed sheet is transported to a discharging port along thetransporting path 8 by the transporting roller R and the platen rollerPR. In the description below, a mechanism which is configured of theplaten roller PR, the rotation driving mechanism, and the transportingroller R is referred to as a transporting mechanism.

The pinching roller P is disposed to oppose the transporting roller R.

On the supply shaft 4 of the ink ribbon 3, a roller portion(hereinafter, referred to as a “ribbon roller”) 4 a of the ink ribbon 3is set. The winding shaft 5 is rotated and driven by the rotationdriving mechanism (not illustrated) which includes a motor (notillustrated), a gear, a belt and the like. The ink ribbon 3 is woundaround the winding shaft 5 and is drawn out of the ribbon roller 4 a bythe rotation of the winding shaft 5. The ink ribbon 3 is nipped betweenthe thermal head 6 and the platen roller PR together with the printedsheet.

The printing head 6-1 prints the image on the sheet 7. The printing head6-1 includes the thermal head 6.

The thermal head 6 is disposed to oppose the platen roller PR, above theplaten roller PR. The thermal head 6 prints the printed sheet which istransported by the platen roller PR and the transporting roller R. Inthe embodiment, the thermal head 6 overwrites the image having thespecial printing surface pattern on the printed sheet by using the inkribbon 3 according to a control of the control device 400. The thermalhead 6 is provided to be contactable with and separable from the platenroller PR, and is biased by an elastic member toward the platen rollerPR. The thermal head 6 which is biased to the elastic member presses theprinted sheet which is transported between the thermal head 6 and theplaten roller PR, to the platen roller PR. The thermal head 6 includes aplurality of heating elements which are disposed in a row and heats theheating elements by selectively energizing the plurality of heatingelements. The thermal head 6 prints by melting or sublimating ink of theink ribbon 3 with the heat of the heating elements and by transferringthe ink to the printed sheet. In the description below, a mechanismwhich is configured of the thermal head 6, the ink ribbon 3, the supplyshaft 4, the winding shaft 5, the rotation driving mechanism, and theplaten roller PR is referred to as a printing mechanism.

Next, a configuration of the inside of the second chamber S2 will bedescribed with reference to FIG. 3.

As illustrated in FIG. 3, the control device 400 and a power supply unit500 are accommodated in the second chamber S2.

The control device 400 controls all of the operations of the printingapparatus 100. For example, the control device 400 controls thetransporting mechanism and the printing mechanism. In addition, thecontrol device 400 drives the paper supplying roller 2 and transportsthe printed sheet in accordance with the performance instruction oferasing and printing. In addition, although not illustrated in FIG. 3,the rotation driving mechanism for driving the transporting mechanismand the rotation driving mechanism for driving the printing mechanismare provided in the second chamber S2.

The power supply unit 500 supplies power to the printing apparatus 100.A dashed line 23 indicates a path through which data passes between thedisplay portion 200 and the control device 400 that are provided in theprinting apparatus 100. A dashed line 24 indicates a path through whichthe data passes between the operating portion 300 and the control device400.

The instruction which is input into the display portion 200 and theoperating portion 300 is notified to the control device 400.

Hereinafter, the control device 400 will be described in detail.

First Embodiment

FIG. 4 is a schematic block diagram illustrating a functionalconfiguration of the control device 400 according to a first embodiment.

The control device 400 includes a central processing unit (CPU), amemory, an auxiliary storage device and the like which are connected bybuses, and executes a control program. The control device 400 functionsas a device which includes a detecting portion 401, an obtaining portion402, a control portion 403, and a setting information storage portion404, as executing the control program. In addition, all or a part offunctions of the control device 400 may be realized by using hardwares,such as an application specification integrated circuit (ASIC), aprogrammable logic device (PLD), or a field programmable gate array(FPGA). In addition, the control program may also be recorded on arecording medium which can be read by a computer. The recording mediumwhich can be read by the computer is a storage device, such as aportable medium including a flexible disk, an optical magnetic disk, aROM, or a CD-ROM, and a hard disk which is embedded in a computersystem. In addition, the control program may be sent and received via anelectric communication line.

The detecting portion 401 detects the presence of the printed sheet, andthe length of the printed sheet with respect to a transporting directionbased on a detection result notified from the sensor S.

The obtaining portion 402 obtains instruction information input into thedisplay portion 200 by the user. In the instruction information,information such as the setting instruction, the setting instructionindicating the size of the sheet, and the performance instruction oferasing and printing is included. In addition, the obtaining portion 402obtains operation information which is input into the operating portion300 by the user. In the operation information, the information such asthe setting instruction, the setting instruction indicating the size ofthe sheet, and the performance instruction of erasing and printing isincluded.

The control portion 403 controls each functional portion of the controldevice 400, the printing mechanism, and the transporting mechanism. Forexample, when the performance instruction of erasing and printing isgiven, the control portion 403 drives the paper supplying roller 2 andtransports the printed sheet to the transporting path 8. In addition,the control portion 403 controls the printing mechanism and makes theprinting mechanism erase and print within the performance range oferasing and printing based on the set information. In addition, when thesetting instruction is given, the control portion 403 displays the rangesetting screen on the display portion 200. The control portion 403stores the information regarding the size of the printed sheet which isa target to be erased and printed, in advance. The information regardingthe size of the printed sheet which is the target to be erased andprinted is set before the user erases and prints.

The setting information storage portion 404 is configured by using astorage device, such as a magnetic hard disk device or a semiconductorstorage device. The setting information storage portion 404 storesinformation (hereinafter, referred to as “setting information”)regarding the performance range of erasing and printing which is set bythe user. In addition, the setting information storage portion 404 maystore the setting information regarding every size of the printed sheet.

FIG. 5 is a view illustrating a specific example of the range settingscreen displayed by the display portion 200.

The range setting screen illustrated in FIG. 5 is displayed on thedisplay portion 200 in accordance with the operation of the operatingportion 300 by the user. Specifically, when notification of the input ofthe setting instruction from the operating portion 300 in accordancewith the operation of the operating portion 300 is sent, the controlportion 403 displays the range setting screen on the display portion200.

On the range setting screen, character strings which indicate theinstruction with respect to the user and a range setting region 30 aredisplayed. In FIG. 5, a character string of “Please designate theperformance range” is displayed as a specific example of the characterstring which indicates the instruction with respect to the user. Therange setting region 30 indicates a region for setting the performancerange of erasing and printing. In the range setting region 30, twoitems, X and Y are illustrated.

The item X indicates an item used for setting the range in a verticaldirection with respect to the transporting direction of the printedsheet. The item Y indicates an item used for setting the range in ahorizontal direction with respect to the transporting direction of theprinted sheet. In addition, a value illustrated in the range settingregion 30 is set by considering an upper left point of the printed sheetas a reference point (0 mm). In other words, as the values of the itemsX and Y increase, the range which is far from the reference point is setto be in the performance range.

In the example illustrated in the range setting region 30, the value ofthe item X is aaa to bbb (mm: millimeter), and the value of the item Yis ccc to ddd (mm). In other words, a region which is surrounded by aaato bbb (mm) in the vertical direction and ccc to ddd (mm) in thehorizontal direction with respect to the transporting direction from thereference point of the printed sheet is the performance range. Aftersetting the performance range, when the user inputs the performanceinstruction of erasing and printing via the operating portion 300, theprinting apparatus 100 erases and prints with respect to the setperformance range. The erasing and printing will be illustrated with aspecific example in FIGS. 6A and 6B.

FIGS. 6A and 6B are schematic views illustrating a specific example oferasing and printing.

FIG. 6A is a view illustrating an example of the printed sheet beforeerasing and printing. FIG. 6B is a view illustrating an example of theprinted sheet after erasing and printing.

As illustrated in FIG. 6A, a plurality of images 32 to 36 are printed onthe printed sheet. A region 37 indicates the performance range oferasing and printing which is set on the range setting screen. Whenerasing and printing are performed, as illustrated in FIG. 6B, the imagehaving the special printing surface pattern is overlapped in theperformance range illustrated in the region 37 of the printed sheet.Accordingly, it is possible to make the visibility of the image in theperformance range which is set by the user deteriorate.

FIG. 7 is a flow chart illustrating a flow of the operations performedin the printing apparatus 100. In addition, in the description of FIG.7, the size of the printed sheet which is the target to be erased andprinted is set in advance.

First, the operating portion 300 receives an operation from the user(ACT 101). For example, the operating portion 300 receives theperformance instruction of erasing and printing or the settinginstruction from the user. The control portion 403 determines whetherthe instruction input by the user is the performance instruction oferasing and printing or the setting instruction (ACT 102). When theinput instruction is the performance instruction of erasing and printing(ACT 102: performance instruction of erasing and printing), the controlportion 403 controls the paper supplying roller 2 and transports theprinted sheet (ACT 103). The detecting portion 401 detects the size ofthe printed sheet based on the detection result obtained from the sensorS. The detecting portion 401 notifies the information regarding thedetected size to the control portion 403. The control portion 403determines whether or not the size of the transported printed sheet isthe set size (ACT 104).

When the size of the transported printed sheet is the set size (ACT 104:YES), the control portion 403 controls the printing mechanism, anderases and prints based on the set information. The printing mechanism(the thermal head 6 or the ink ribbon 3) erases and prints according tothe control of the control portion 403 (ACT 105).

Meanwhile, when the size of the transported printed sheet is not the setsize (ACT 104: NO), the control portion 403 does not erase and print(ACT 106). In this case, without controlling the printing mechanism, thecontrol portion 403 controls the transporting mechanism and outputs theprinted sheet in a state of being transported from the paper supplyingtray 1.

In addition, in processing of ACT 102, when the input instruction is thesetting instruction (ACT 102: setting instruction), the control portion403 displays the range setting screen on the display portion 200. Thedisplay portion 200 displays the range setting screen according to thecontrol of the control portion 403 (Act 107). After this, the operatingportion 300 receives setting related to the performance range of erasingand printing from the user (ACT 108). When the performance range oferasing and printing is set by the user, the control portion 403 storesthe information regarding the set performance range in the settinginformation storage portion 404 as the setting information (ACT 109).After this, the process returns to the processing of ACT 102.

In the printing apparatus 100 configured in this manner, it is possibleto easily make the visibility of the image which is the desired targetof the user among the images printed on the printed sheet deteriorate.Hereinafter, effects thereof will be described in detail.

The printing apparatus 100 displays the range setting screen for settingthe performance range of erasing and printing in accordance with theoperation of the user. Accordingly, it is possible to freely set theregion of which the visibility is the desired target which maydeteriorate of the user. In addition, the printing apparatus 100 printsthe image having the special printing surface pattern within theperformance range set by the user. Therefore, the image having thespecial printing surface pattern is overlapped in the region includingthe image which is already printed. For this reason, it is possible toeasily make visibility of the image which is the desired target of theuser among the images printed on the printed sheet deteriorate.

In addition, as described above, the user can freely set the performancerange of erasing and printing while viewing the range setting screen.For this reason, it is possible to improve convenience.

In addition, the size of the printed sheet which is the target to beerased and printed is set before erasing and printing. In addition, whenthe size of the printed sheet which is transported after receiving theperformance instruction of erasing and printing is different from thesize set in advance, erasing and printing are not performed. Therefore,since the size is different, overlapping is not performed in a regionwhich is different from the region that the user assumes. Accordingly,it is possible to suppress unnecessary printing. For this reason, it ispossible to suppress consumption of the ink ribbon 3 due to unnecessaryprocessing.

In addition, in the embodiment, the user needs to specify the range inthe vertical direction and the horizontal direction with respect to thetransporting direction from the reference point of the printed sheet inorder to set the performance range of erasing and printing. For thisreason, there is a possibility that time and effort is spent by theuser. However, the performance range of erasing and printing may not benecessarily accurate, and may be a broad range which includes the imageof which the visibility is the target which may deteriorate of the user.Therefore, the user may also set a broad range without strictly settingthe range. For this reason, time and effort spent by the user decreases.

Next, a modification example of the printing apparatus 100 and thecontrol device 400 will be described.

In the embodiment, a configuration (configuration in which oneperformance range is designated) in which the user sets one performancerange is illustrated, but a plurality of performance ranges may beconfigured to be set, which will be described in detail with referenceto FIGS. 8, 9A, and 9B.

FIG. 8 is a view illustrating a specific example of the range settingscreen when the plurality of performance ranges are set.

The range setting screen illustrated in FIG. 8 is displayed on thedisplay portion 200 in accordance with the operation of the operatingportion 300 by the user. Specifically, when notification of an input ofan instruction of setting a plurality of performance ranges from theoperating portion 300 is sent, the control portion 403 displays therange setting screen on the display portion 200 illustrated in FIG. 8.

On the range setting screen illustrated in FIG. 8, a plurality of rangesetting regions 38 and 39 which are different from those of the rangesetting screen illustrated in FIG. 5 are displayed. In addition, on therange setting screen illustrated in FIG. 8, three or more range settingregions may be displayed.

In the range setting regions 38 and 39, a value of an item X is aaa tobbb, and eee to fff (mm), and a value of an item Y is ccc to ddd, andggg to hhh (mm). In other words, a region which is surrounded by aaa tobbb (mm) in the vertical direction and ccc to ddd (mm) in the horizontaldirection with respect to the transporting direction from the referencepoint of the printed sheet is the performance range. Furthermore, aregion which is surrounded by eee to fff (mm) in the vertical directionand ggg to hhh (mm) in the horizontal direction with respect to thetransporting direction from the reference point of the printed sheet isalso the performance range. After setting the performance range, whenthe user inputs the performance instruction of erasing and printing viathe operating portion 300, the printing apparatus 100 erases and printswith respect to each set performance range. The erasing and printingwhen the plurality of performance ranges are set will be illustratedwith a specific example in FIGS. 9A and 9B.

FIGS. 9A and 9B are schematic views illustrating a specific example oferasing and printing when the plurality of performance ranges are set.

FIG. 9A is a view illustrating an example of the printed sheet beforeerasing and printing are performed. FIG. 9B is a view illustrating anexample of the printed sheet after erasing and printing.

Regions 40 and 41 indicate the performance range of erasing and printingwhich is set on the range setting screen. When erasing and printing areperformed, as illustrated in FIG. 9B, the images having the specialprinting surface patterns are overlapped in the performance rangesillustrated in the regions 40 and 41 of the printed sheet. Accordingly,it is possible to make the visibility of the image in the plurality ofperformance ranges which are set by the user deteriorate.

The range setting screen may be displayed on the display portion 200every time the performance instruction of erasing and printing is given.In the case of using such a configuration, after the performanceinstruction of erasing and printing is given, the control portion 403displays the range setting screen on the display portion 200.

According to such a configuration, it is possible to set the performancerange every time erasing and printing are performed. Therefore, no caseoccurs where the user forgets to set the performance range, and, it isalso possible to correspond to a case where the user desires to set arange which is different from the previously set performance range asthe target, according to circumstances. For this reason, it is possibleto improve convenience.

The control portion 403 may stop transporting the printed sheet when thesize of the printed sheet which is the target to be erased and printedis not the size set in advance.

When the performance instruction of erasing and printing is given, theprinting apparatus 100 may be configured to print the image to be darkerthan that through general printing. In this case, when the performanceinstruction of erasing and printing is given, the printing apparatus 100prints the image having the special printing surface pattern at a highertemperature than the temperature of the thermal head 6 in a case ofgeneral printing.

According to such a configuration, it is possible to make the visibilityof the image which is already printed on the printed sheet deterioratefurther.

The image having the special printing surface pattern may be freelyselected by the user from among the plurality of patterns.

Second Embodiment

FIG. 10 is a schematic block diagram illustrating a functionalconfiguration of a control device 400 a according to a secondembodiment.

The control device 400 a includes the CPU, the memory, the auxiliarystorage device and the like which are connected by the buses andexecutes the control program. The control device 400 a functions as thedevice which includes the detecting portion 401, the obtaining portion402, a control portion 403 a, the setting information storage portion404, and a format data storage portion 405 a by executing the controlprogram. In addition, all or a part of functions of the control device400 a may be realized by using the hardware, such as the ASIC, the PLD,or the FPGA. In addition, the control program may also be recorded onthe recording medium which can be read by the computer. The recordingmedium which can be read by the computer is the storage device such asthe portable medium including the flexible disk, the optical magneticdisk, the ROM, or the CD-ROM, and the hard disk which is embedded in thecomputer system. In addition, the control program may be sent andreceived via the electric communication line.

The control device 400 a has a configuration which is different fromthat of the control device 400 in that the control portion 403 a isprovided instead of the control portion 403 and the format data storageportion 405 a is newly provided. Other characteristics of theconfiguration are similar to those in the configuration of the controldevice 400. For this reason, the description of the entire controldevice 400 a will be omitted, and the control portion 403 a and theformat data storage portion 405 a will be described.

The format data storage portion 405 a is configured by using the storagedevice, such as the magnetic hard disk or the semiconductor storagedevice. The format data storage portion 405 a stores printing formatdata for every size of the sheet. The printing format data is data inwhich a region that illustrates items to be printed and a printingposition on the sheet is set in advance. More specifically, in theprinting format data, information related to the region which isconfigured of the position and each of longitudinal and lateral valuesfor every item printed on the sheet is set. The item printed on thesheet is, for example, a name (merchandise name in a case ofmerchandise), code information, an ID, or a password. In addition, theposition, the height, and the width may be expressed, for example, byconsidering the upper left point of the sheet as a starting point.

The control portion 403 a controls each functional portion of thecontrol device 400, the printing mechanism, and the transportingmechanism. For example, when the control portion 403 a receives theperformance instruction of erasing and printing, the control portion 403a drives the paper supplying roller 2 and transports the printed sheetto the transporting path 8. In addition, the control portion 403 acontrols the printing mechanism and erases and prints within theperformance range of erasing and printing based on the set information.In addition, when the setting instruction is given, the control portion403 a displays the range setting screen including the printing formatdata on the display portion 200. The control portion 403 a stores theinformation regarding the size of the printed sheet which is the targetto be erased and printed, in advance. The information regarding the sizeof the printed sheet which is the target to be erased and printed is setbefore erasing and printing are performed by the user.

Hereinafter, based on the printing format data, a case where theperformance range of erasing and printing are set will be described indetail.

First, the setting instruction is input when the user operates theoperating portion 300. At this time, the user also inputs theinformation regarding the size of the printed sheet. When the settinginstruction is input, the control portion 403 a obtains the printingformat data of the sheet which is illustrated by the informationregarding the size, based on the format data storage portion 405 a andthe information regarding the size. In addition, the control portion 403a displays the range setting screen including the obtained printingformat data on the display portion 200 and sets the performance range oferasing and printing. A specific example thereof is illustrated in FIG.11.

FIG. 11 is a view illustrating a specific example of the range settingscreen which includes the printing format data. On the range settingscreen illustrated in FIG. 11, the printing format data is displayedinstead of the range setting region 30 of the range setting screenillustrated in FIG. 5. In addition, a character string of “Pleasedesignate the performance range (when selecting a plurality ofperformance ranges, please select a plurality of regions)” is displayedas a specific example of the character string which indicates theinstruction with respect to the user. In the printing format dataillustrated in FIG. 11, a plurality of regions 42 to 46 are displayed. Aregion is selected as the user touches or traces any one of the regionsvia the display portion 200. The control portion 403 a sets a rangewhich is illustrated by the region selected by the user as theperformance range of erasing and printing. For example, when the usertouches or traces the region 42, the control portion 403 a sets therange which is illustrated by the region 42 as the performance range. Inaddition, when the user selects the plurality of regions, the controlportion 403 a sets the range which is illustrated by each of theselected regions as the performance range of erasing and printing. Aftersetting the performance range, when the user inputs the performanceinstruction of erasing and printing via the operating portion 300, theprinting apparatus 100 erases and prints with respect to the setperformance range. A specific example of erasing and printing isillustrated in FIGS. 12A and 12B. In addition, FIGS. 12A and 12Billustrate a case where the region 43 is selected by the user whensetting the performance range.

FIGS. 12A and 12B are schematic views illustrating a specific example oferasing and printing.

FIG. 12A is a view illustrating an example of the printed sheet beforeerasing and printing. FIG. 12B is a view illustrating an example of theprinted sheet after erasing and printing. As illustrated in FIG. 12A, aplurality of images 47 to 51 are printed on the printed sheet. Whenerasing and printing, as illustrated in FIG. 12B, the image having thespecial printing surface pattern is overlapped in a region 52corresponding to the region 43 selected by the user. Accordingly, it ispossible to make the visibility of the image in the performance rangeset by the user deteriorate.

FIG. 13 is a flow chart illustrating the flow of the operationsperformed in the printing apparatus 100. In addition, in the descriptionof FIG. 13, the size of the printed sheet which is the target to beerased and printed is set in advance. In addition, in FIG. 13, similarprocesses to those in FIG. 7 will be given similar reference numerals tothose in FIG. 7 and the description thereof will be omitted.

In the processing of ACT 102, when the input instruction is the settinginstruction (ACT 102: setting instruction), the control portion 403 adisplays the range setting screen on the display portion 200.Specifically, the control portion 403 a refers to the format datastorage portion 405 a and obtains the printing format data whichcorresponds to the size of the printed sheet which is set in advance. Inaddition, the control portion 403 a displays the range setting screenwhich includes the obtained printing format data on the display portion200. The display portion 200 displays the range setting screen whichincludes the printing format data according to the control of thecontrol portion 403 (ACT 201). After this, the display portion 200receives the setting related to the performance range of erasing andprinting from the user (ACT 202). Specifically, the display portion 200receives the setting of the region which is the performance range oferasing and printing from the user. When the setting related to theperformance range of erasing and printing is given from the user, thecontrol portion 403 a stores the information related to the setperformance range as the setting information in the setting informationstorage portion 404 (ACT 203). Specifically, the control portion 403 astores the information related to the region selected by the user as thesetting information in the setting information storage portion 404.After this, the process returns to the processing of ACT 102.

Due to having such a configuration, the user can easily set theperformance range by inputting the information regarding the size of theprinted sheet. Furthermore, it is possible to make the user actuallyrecognize the range in which the image having the special printingsurface pattern is printed. Therefore, it is possible to alleviate timeand effort spent by the user. For this reason, it is possible to easilymake the visibility of the image which is the desired target of the useramong the images printed on the printed sheet deteriorate.

In addition, as described above, the user can freely set the performancerange of erasing and printing while viewing the range setting screen.For this reason, it is possible to improve convenience.

In addition, the size of the printed sheet which is the target to beerased and printed before erasing and printing is set. In addition, whenthe size of the printed sheet which is transported after receiving theperformance instruction of erasing and printing is different from thesize set in advance, erasing and printing are not performed. Therefore,since the size is different, overlapping is not performed in a regionwhich is different from the region that the user assumes. Accordingly,it is possible to suppress unnecessary printing. For this reason, it ispossible to suppress consumption of the ink ribbon 3 due to unnecessaryprocessing.

Next, a modification example of the printing apparatus 100 and thecontrol device 400 a will be described.

The range setting screen may be displayed on the display portion 200every time the performance instruction of erasing and printing is given.In the case of having such a configuration, after the performanceinstruction of erasing and printing is given, the control portion 403 adisplays the range setting screen on the display portion 200.

According to such a configuration, it is possible to set the performancerange every time erasing and printing are performed. Therefore, no caseoccurs where the user forgets to set the performance range, and it isalso possible to correspond to a case where the user desires to set arange which is different from the previously set performance range asthe target, according to circumstances. For this reason, it is possibleto improve convenience.

The control portion 403 a may stop transporting the printed sheet whenthe size of the printed sheet which is the target to be erased andprinted is not the size set in advance.

When the performance instruction of erasing and printing is given, theprinting apparatus 100 may be configured to print the image to be darkercompared to that by the general printing. In this case, when theperformance instruction of erasing and printing is given, the printingapparatus 100 prints the image having the special printing surfacepattern at a higher temperature than the temperature of the thermal head6 in a case of the general printing.

According to such a configuration, it is possible to further make thevisibility of the image which is already printed on the printed sheetdeteriorate.

The image having the special printing surface pattern may be freelyselected by the user among the plurality of patterns.

A roller pair (the pinching roller P and the transporting roller R)provided in the printing apparatus 100 is not necessarily limited tobeing included in the number thereof illustrated in FIG. 2. For example,more of the roller pairs than the number thereof illustrated in FIG. 2may be provided in the printing apparatus 100. In addition, thepositional relationship of the transporting roller Rand the pinchingroller P which are illustrated as the roller pair is not necessarilylimited to the positional relationship illustrated in FIG. 2. Forexample, the pinching roller P may be disposed to oppose thetransporting roller R above the transporting roller R, and thetransporting roller R may be disposed to oppose the pinching roller Pbelow the pinching roller P.

According to at least one of the embodiments described above, byproviding the obtaining portion which obtains the information regardingthe image in which the visibility is made to deteriorate on the sheet onwhich the image is printed and the printing portion which overwrites theimage having the printing surface pattern on the sheet by using the inkribbon based on the obtained information, it is possible to easily makethe visibility of the image that the user desires among the imagesprinted on the printed sheet deteriorate.

While certain embodiments have been described these embodiments havebeen presented by way of example only, and are not intended to limit thescope of the inventions. Indeed, the novel embodiments described hereinmay be embodied in a variety of other forms: furthermore variousomissions, substitutions and changes in the form of the embodimentsdescribed herein may be made without departing from the spirit of theinventions. The accompanying claims and there equivalents are intendedto cover such forms or modifications as would fall within the scope andspirit of the invention.

What is claimed is:
 1. A printing apparatus, comprising: an obtainingportion configured to obtain a setting information, the settinginformation contain a size of a sheet and a specific area in the sheet,the specific area defined area of printing a pattern image in the sheet;a setting information storage portion configured to store the settinginformation; a detecting portion configured to detect a first size of afirst sheet on which the image is printed; a printing portion configuredto overwrite the pattern image on the area in the first sheet based onthe set information stored in the setting information storage portion;and a transport portion configured to transport the first sheet to adischarging port; when the first size matches the size included in thesetting information, the printing portion overwrite the pattern image onthe area in the first sheet; when the first size is not the sizeincluded in the setting information, the transport transports the firstsheet to the discharging port.
 2. The printing apparatus according toclaim 1, further comprising: a display portion which displays forsetting the information, wherein the display portion displays forsetting a range of printing the pattern image, and wherein the printingportion overwrites the image having the printing surface pattern on thefirst sheet within the set range.
 3. The printing apparatus according toclaim 2, wherein the obtaining portion obtain the specific area in avertical direction and in a horizontal direction with respect to atransporting direction of the sheet, and wherein the printing portionoverwrites the image having the printing surface pattern on the firstsheet within the set range in the vertical direction and in thehorizontal direction.
 4. The printing apparatus according to claim 2,further comprising a printing format data storage portion configured tostore printing format data in which one or more area of the imageprinted on the sheet is set in advance for every size of the sheet,wherein the obtaining portion obtain the specific area defined one ormore area in the printing format data.
 5. The printing apparatusaccording to claim 2, wherein the printing portion overwrites the imagehaving the pattern image in each of the specific area defined a pluralof area contained the set information when a plurality of pieces ofinformation are set.
 6. The printing apparatus according to claim 2,wherein the printing a pattern image is configured of a plurality ofsymbols arranged therein.
 7. A printing method, comprising: obtaining asetting information, the setting information contain a size of a sheetand a specific area in the sheet, the specific area defined area ofprinting a pattern image in the sheet; storing the setting information;detecting a first size of a first sheet on which the image is printed;overwriting the pattern image on the area in the first sheet based onthe setting information; and transporting the first sheet to adischarging port; when the first size matches the size included in thesetting information, overwriting the pattern image on the area in thefirst sheet; when the first size is not the size included in the settinginformation, transporting the first sheet to the discharging port.
 8. Anon-transitory recording medium which records a computer program forexecuting a method in a computer, the method, comprising: obtaining asetting information, the setting information contain a size of a sheetand a specific area in the sheet, the specific area defined area ofprinting a pattern image in the sheet; storing the setting information;detecting a first size of a first sheet on which the image is printed;overwriting the pattern image on the area in the first sheet based onthe setting information; and transporting the first sheet to adischarging port; when the first size matches the size included in thesetting information, overwriting the pattern image on the area in thefirst sheet; when the first size is not the size included in the settinginformation, transporting the first sheet to the discharging port.